菜鸟代码解释

Question

<?xml version="1.0"?>
<configuration>
<appSettings>
<add key="dsn" value="server=(local);uid=sa;password=;database=aa"/>
</appSettings>
<system.web>
<compilation defaultLanguage="C#" debug="true"/>
<pages validateRequest="false"/>
<customErrors mode="Off"/>
<globalization fileEncoding="gb2312" requestEncoding="gb2312" responseEncoding="gb2312"/>
<sessionState mode="InProc" cookieless="true" timeout="80"/>
<trace enabled="true"/>
</system.web>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1" appliesTo="v1.0.3705">
<dependentAssembly>
<assemblyIdentity name="Accessibility" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
<bindingRedirect oldVersion="0.0.0.0-65535.65535.65535.65535" newVersion="1.0.3300.0"/>
</dependentAssembly>
请问<dependentAssembly>**</dependentAssembly>的xml语言什么意思，怎么写，就在web.comfig写？